Pros
I learned an absolutely ridiculous amount at Wiley-Blackwell. The skills I developed (and could put on my resume) were above and beyond what I expected from the job. Also, the people who work there are FANTASTIC. Friendly, competent, flexible, considerate, and completely willing to taking into account your personal life. Socially, it was a GREAT atmosphere.
Cons
Don't temp for them. I was hired as a temp, and ended up working there for a year. Every month or so management would ask me to stay on a little longer, but then make some excuse as to why they couldn't hire me permanently... despite other departments hiring temps permanently. It didn't allow me to make plans, not knowing how long I'd be employed, and eventually I quit to find something better.